AVideo Flaws Enable Remote Code Execution via Command Injection and Malicious Plugin Upload
WWBN AVideo versions up to and including 26.0 are affected by two high-severity flaws that can lead to remote code execution. CVE-2026-33482 is an OS command injection bug in sanitizeFFmpegCommand(), which strips some shell metacharacters but fails to remove bash command substitution using $(). Because the resulting ffmpeg command is later executed in a double-quoted sh -c context by execAsync(), an attacker able to craft a valid encrypted payload can run arbitrary commands on the standalone encoder server.
A separate issue, CVE-2026-33507, allows unauthenticated code execution through the plugin import workflow. The objects/pluginImport.json.php endpoint permits admin users to upload and install plugin ZIP archives containing executable PHP, but lacks CSRF protection; with session.cookie_samesite = 'None' on HTTPS connections, an attacker can trick a logged-in administrator into silently importing a malicious plugin and deploying a PHP webshell. Fixes were introduced in commits 25c8ab90269e3a01fb4cf205b40a373487f022e1 and d1bc1695edd9ad4468a48cea0df6cd943a2635f3.
Timeline
Mar 23, 2026
CVE-2026-33507 CSRF plugin upload RCE in AVideo publicly disclosed
A high-severity AVideo vulnerability was publicly disclosed showing that missing CSRF protection on objects/pluginImport.json.php could let an unauthenticated attacker induce an administrator to upload a malicious plugin and gain code execution. The issue affects versions up to and including 26.0.
Mar 23, 2026
CVE-2026-33482 command injection in AVideo publicly disclosed
A high-severity vulnerability in WWBN AVideo was publicly disclosed describing how incomplete sanitization in sanitizeFFmpegCommand() could allow arbitrary command execution on the standalone encoder server. The issue affects versions up to and including 26.0.
Mar 23, 2026
AVideo CSRF-to-RCE plugin import flaw patched in commit d1bc169
WWBN AVideo fixed a CSRF vulnerability affecting versions up to and including 26.0 in the plugin import endpoint, which could let an attacker trick a logged-in administrator into uploading a malicious plugin and achieve remote code execution. The patch was included in commit d1bc1695edd9ad4468a48cea0df6cd943a2635f3.
Mar 23, 2026
AVideo command injection flaw patched in commit 25c8ab9
WWBN AVideo fixed an OS command injection vulnerability affecting versions up to and including 26.0, where sanitizeFFmpegCommand() failed to block $() shell substitution before execution in a sh -c context. The patch was introduced in commit 25c8ab90269e3a01fb4cf205b40a373487f022e1.
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